19900995

素因数分解:

$3^1\times 5^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1\times {\mathrm{199}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 32832000

約数和(自身を除く): 12931005

約数列:

[1, 3, 5, 15, 59, 113, 177, 199, 295, 339, 565, 597, 885, 995, 1695, 2985, 6667, 11741, 20001, 22487, 33335, 35223, 58705, 67461, 100005, 112435, 176115, 337305, 1326733, 3980199, 6633665, 19900995]

約数ペア:

[(1, 19900995), (3, 6633665), (5, 3980199), (15, 1326733), (59, 337305), (113, 176115), (177, 112435), (199, 100005), (295, 67461), (339, 58705), (565, 35223), (597, 33335), (885, 22487), (995, 20001), (1695, 11741), (2985, 6667)]